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Is "ren" a smart pointer?<BR>
<BR>
If so, you're two code fragment should be equivalent, unless, there's a bug with vtkSmartPointer. In fact, with smart pointer, you don't even need ren = NULL or ren->Delete() (the purpose of using smart pointer).<BR><BR>
On the other hand, as long as your Render window keeps a reference to the object pointed by ren, that object will not be deallocated. You ended up accumulating renderers in the render window.<BR>
<BR>
Your approach of calling RemoveRenderer from RenderWindow is the right path. You must make sure that you always use smart pointer in order for the gabage collector to work correctly.<BR>
<BR>
HTH!<BR>
<BR>Xiaofeng<BR><BR> <BR>
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Date: Sun, 22 May 2011 13:03:35 +0200<BR>From: greenlander1986@gmail.com<BR>To: chasank@gmail.com<BR>CC: vtkusers@vtk.org<BR>Subject: Re: [vtkusers] growing RAM memory<BR><BR>When I use <BR><BR><SPAN style="FONT-FAMILY: courier new,monospace"> ren = NULL;</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> ren = vtkSmartPointer<vtkRenderer>::New();</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> ren->SetBackground(1,1,1);</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> ren->AddActor(actor);</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> widget->GetRenderWindow()->AddRenderer(ren);</SPAN><BR><BR>it works but, memory is grown again. <BR><BR>when I use <BR><BR><SPAN style="FONT-FAMILY: courier new,monospace"> ren->Delete();</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> ren = vtkSmartPointer<vtkRenderer>::New();</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> ren->SetBackground(1,1,1);</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> ren->AddActor(actor);</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> widget->GetRenderWindow()->AddRenderer(ren);</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"></SPAN><BR>it doesnt work.<BR><BR>I am desperate. :(<BR><BR>
<DIV class=ecxgmail_quote>2011/5/22 G G <SPAN dir=ltr><<A href="mailto:greenlander1986@gmail.com">greenlander1986@gmail.com</A>></SPAN><BR>
<BLOCKQUOTE style="BORDER-LEFT: #ccc 1px solid; PADDING-LEFT: 1ex" class=ecxgmail_quote>I am trying now. In VTK examples Examples\GUI\Qt\Events is in global scope only vtkRenderer... I have tried according this, but it crash in <BR><SPAN style="FONT-FAMILY: courier new,monospace"> cout<<"bla"<<endl;</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> ren = NULL;</SPAN>
<DIV class=ecxim><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> ren->SetBackground(1,1,1);</SPAN><BR style="FONT-FAMILY: courier new,monospace"></DIV><SPAN style="FONT-FAMILY: courier new,monospace"> ren->AddActor(actor);</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> widget->GetRenderWindow()->AddRenderer(ren);</SPAN><BR style="FONT-FAMILY: courier new,monospace"><SPAN style="FONT-FAMILY: courier new,monospace"> cout<<"ups"<<endl;</SPAN><BR style="FONT-FAMILY: courier new,monospace">"bla" is written, but "ups" not. I have in all important method <BR>vtkSmartPointer<vtkRenderer> ren<BR><BR>inicialization I do only ones, it is problem?
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<DIV class=ecxgmail_quote>2011/5/21 G G <SPAN dir=ltr><<A href="mailto:greenlander1986@gmail.com">greenlander1986@gmail.com</A>></SPAN><BR>
<BLOCKQUOTE style="BORDER-LEFT: #ccc 1px solid; PADDING-LEFT: 1ex" class=ecxgmail_quote>Thank you, I try it. And post here solution<BR><BR>
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<DIV>2011/5/21 chasank <SPAN dir=ltr><<A href="mailto:chasank@gmail.com">chasank@gmail.com</A>></SPAN><BR></DIV>
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<BLOCKQUOTE style="BORDER-LEFT: #ccc 1px solid; PADDING-LEFT: 1ex" class=ecxgmail_quote>My suggestion is,<BR> if you do not need more than one renderer and RenderWindow<BR> - Define them in a global scope,<BR> - And before each call to the widgetInicialization method, set them to the<BR>NULL<BR> - in widgetInicialization method, Re-create them, set the values<BR> - Lastly update your widget object.<BR><FONT color=#888888><BR>--<BR>View this message in context: <A href="http://vtk.1045678.n5.nabble.com/growing-RAM-memory-tp4346305p4415624.html" target=_blank>http://vtk.1045678.n5.nabble.com/growing-RAM-memory-tp4346305p4415624.html</A><BR></FONT>
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